Stock material or miscellaneous articles – Hollow or container type article – Cellular material derived from plant or animal source
Patent
1985-06-03
1986-02-11
Lesmes, George F.
Stock material or miscellaneous articles
Hollow or container type article
Cellular material derived from plant or animal source
220 21R, 313113, 313116, 313117, 313634, 362363, 362348, H01K 100
Patent
active
045698678
ABSTRACT:
A method and apparatus for producing the type lamp glass envelope used in a reflector lamp is disclosed which employs a ribbon machine. Said ribbon formed lamp glass envelope includes a cylindrical neck portion terminating at one end in a curved reflector portion closed by an integral flattened face portion of lesser curvature with light distributing elements being formed on the exterior surface of said face portion. In its preferred embodiments, the reflector portion of said lamp glass envelope is of the PAR type which can further include truncation of the parabolic shape with opposing substantially flattened parallel surfaces as well as face portions for said lamp glass envelope which can be circular or rectangular in shape. A novel mold construction permitting said lamp glass envelope to be blown on a ribbon machine includes a pair of cooperating halves to form the sides of the curved glass envelope in a central cavity and which terminate at the ends of said cavity in a separate curved or flat base part which undergoes reciprocal motion in a vertical direction during said manufacturing process.
REFERENCES:
patent: 3020435 (1962-02-01), Mead
patent: 3372826 (1968-03-01), Heaton et al.
patent: 3694178 (1972-09-01), Hennequin
patent: 3716136 (1973-02-01), Birner et al.
patent: 3729301 (1973-04-01), Heaton et al.
patent: 3729302 (1973-04-01), Heaton
patent: 3885181 (1975-05-01), Nelson et al.
General Electric Company
Jacob Fred
Lesmes George F.
McDevitt J. F.
Schlamp Philip L.
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